package cn.zijitc;

public class Bubble {

    public static void sort(Comparable[] a){
        for (int i = a.length-1; i >0 ; i--) {
            for (int j=0;j<i;j++){
                if (greater(a[j],a[j+1])){
                    exchange(a,j,j+1);
                }
            }
        }
    }
    private static boolean greater(Comparable v,Comparable w){
        return v.compareTo(w)>0;
    }
    private static void exchange(Comparable[] a,int i,int j){
        Comparable temp;
        temp=a[i];
        a[i]=a[j];
        a[j]=temp;
    }
}
